Log Message:-----------Add:
> * Research use of signals and sleep wake ups> > http://archives.postgresql.org/pgsql-hackers/2007-07/msg00003.php
Modified Files:-------------- pgsql/doc: TODO (r1.2306 -> r1.2307) (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/TODO?r1=1.2306&r2=1.2307) pgsql/doc/src/FAQ: TODO.html (r1.815 -> r1.816) (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html?r1=1.815&r2=1.816)